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Studies on the Thermal Decomposition of (NH 4) 2SO 4 and 2KCl+(NH 4) 2SO 4 by Thermogravimetric Method

Tang Dingxing (Anhui Institute of Mechanical and Electrinical Engineering Wuhu 241000) Feng Wen (Er Shi Li Pu School Lanzhou Lanzhou 730000)  
The kinetic parameters of the thermal decomposttion of (NH 4) 2SO 4 and 2KCl+(NH 4) 2SO 4 were studied under non-isothermal condition by TG. The data was treated by means of Coats-Redfern method. The results were shown below (where E is activation energy, A is frequeney factor): (NH 4) 2SO 4 first step: E=122.9 kj/mol; A=6.695×10 9S -1 second step: E=195 3 kj/mol; A=1.359×10 13 S -1 2KCl+(NH 4) 2SO 4 first step: E=65 33 kj/mol;A=3.023×10 4S -1 second step: E=191 5 kj/mol;A=2.982×10 15 S -1 。
【CateGory Index】: O642.3
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